Firefox 技術支援討論區

whenever I try to use a theme that defaulted to dark mode in the previous update, it defaults to light mode instead. for some websites this means that it displays in bright white. i need dark mode. even when i set the toolbar colour (which previously controlled dark/light in Firefox Colour) to black it's on light mode. how do I get dark mode back, i hate this. this theme (picture attached) used to be dark mode but now it defaults to light. how do i get dark mode back.

My Macbook Pro was repaired at the local Apple store. When I got it back, Firefox was closed. When I opened it again, I could not restore my previous session. It has been over a week now. How can I restore the session from before my Macbook Pro was repaired?

How to stop firefox from downloading x.htm files? I have checked "Always ask me where to save files" in the Downloads menu, for every file type available there, and it still will download x.htm without asking.

My Firefox keeps crashing. also I get this message often "Gah. Your Tab has just crashed". I uninstalled and reinstalled multiple times. I did a clean uninstall. I deleted all Firefox folders in Program manager and used account hidden files. Then reinstalled and it still crashed repeatedly.

Up to today if I click on a link in Outlook email it would open in Firefox (both set as default) If I change browser default to Chrome, links work. I'm at latest update in Firefox. If I right click on email link, copy, paste into Firefox, links work OK. Mouse icon will spin for a few seconds and there are no error messages. Not aware of any changes. Restarts of PC, Outlook, and Firefox (even tried troubleshoot mode) = no help.

Access Denied You don't have permission to access "http://www.swansonvitamins.com/" on this server.

Reference #18.6037b9d0.1652765508.828f06e4

Now on Firefox 100.0.1 On earlier versions of Firefox I was able to set a particular url for my home(opening) page. That is still true. However, on past versions I was also able to make *my home page* appear on every tab I opened. On the current edition I get a choice of only Firefox Home Page (default) or Blank page. I cannot get my home page on the new tab. How can I bypass the restrictions of the settings under Home to get my home page on every tab?

That the question I need an answer to. Everything below this is explanation of why I want this and a complaint about how Firefox changes things that I would appreciate being passed on to the developers.

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If I choose Firefox Home Page (default), I am *forced* to use the address box to put in my search terms. I have become accustomed to the various search engines with their splash screens - with the nice big search box in the middle of the screen (both horizontally and vertically). It is absolutely unnerving to me to try to type in the box in the middle and have nothing show up there but up above in the address box.

I am a project person in a multi-tasking world, which means whether I like it or not, I have to multitask too. For me to do this successfully, all my tools need to be where I expect and perform as I expect them. Even putting duckduckgo.com in the current home page/new window setting, doesn't get the duckduckgo splash page, but even though I'm not that technically advanced, I found a way of getting it in my home page window. However, the tabs section doesn't offer me an opportunity to put my own choice in.

I wish Firefox would stop tinkering with otherwise minor things. I understand fixing found vulnerabilities. I understand providing new services and technology when they're developed. But why force people to use search and tabs the way Firefox wants them to rather than the way the user is accustomed to.

I am an a US citizen, living in Europe! How do I keep Mozilla from changing languages on me? I just connected my Laptop PC and everything is in the German language. Why? I'm sorry, but I must insist that Mozilla stop doing this. My mother tongue is American English, and when I keep getting your communications in a foreign language, there is a good possibility that I might misinterpret what has been written by Mozilla to me. Or is the problem with me living in Europe?

Each time Firefox is refreshed, I must re-install extensions. How can I save the extensions so they do not need to be downloaded and re-installed ever time Firefox refreshes?

I frequently have difficulty when I need to make plain-test copies of web pages. These are pages that only allow "Select All" to select parts of pages, so that important parts of the pages cannot be selected, or so that a large number of select-and-copy cycles are required to copy the information on a webpage. The Firefox extensions that I have tried like the old "right to click" do not seem to help much. With old versions of Windows, I would use print-to-file for a generic plain-text printer, but that does not provide a readable file on Win 10.

I frequently find these problems on web pages with survey questions. This web page is a very simple example where multiple cycles of select-and-copy are required: https://support.mozilla.org/en-US/questions/new/desktop/form People who have accounts on Meetup.com should see an egregious example on this page: https://www.meetup.com/account/interests/

Thanks for any help, Lloyd

I have two identical computers running Firefox on Windows 7. No serious issues for 3 years or longer.

Just recently, version 100 showed "Unknown Source" instead of the normal UAC authorization window which lists mozilla.org as the source.

The 100.0.1 update showed the same warning.

This only occurred on one of the computers. The other one does not show the warning.

Firefox worked fine after doing the downloads anyway, but the "Unknown Source" is not right and makes the user think security is being compromised.

Previously to a mac OS upgrade to 11.6.1, the browser worked fine. Now, nothing loads even though all the other browsers work fine. Pages just display "Secure Connection Failed." I have gone through and executed the adjustments on the "Websites don't load - troubleshoot and fix error messages" page but it still does not work.

Hey there, I'm having trouble with Firefox. Something inside Firefox is eating up my RAM and CPU. Usually I recognize the problem happening because my laptop fans ramp up. The problem occurs on my laptop as well on my desktop (both on latest stable Firefox[Build ID: 20220513165813] and Windows 11). The workaround is to kill the Firefox subprocess which is using most of the CPU and RAM. Then everything is back to normal for some time, until Firefox starts messing with me again.

While trying to pinpoint the problem I'm stuck. I can't find a culprit other than the fact it has something to do with Firefox. Clean reinstalling did not help. The Firefox Task Manager doesn't know anything about huge amounts of RAM being taken. I searched for solutions on the net and the about:memory indicates the problem is some IPC related stuff:

 {
  "process": "Main Process (pid 12648)",
  "path": "queued-ipc-messages/content-parent(Browser, pid=9612, open channel, 0x22e4b33fc30, refcnt=38)",
  "kind": 2,
  "units": 1,
  "amount": 0,
  "description": "The number of unset IPC messages held in this ContentParent's channel.  A large value here might indicate that we're leaking messages.  Similarly, a ContentParent object for a process that's no longer running could indicate that we're leaking ContentParents."
 }

The bug reporting guidelines(https://bugzilla.mozilla.org/page.cgi?id=bug-writing.html) are encouraging me to attach steps to reproduce and try the steps listed on https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-or-cpu-resources . But I've exhausted the steps there (Except for upgrading the PC / RAM).

Especially on the go this Firefox-RAM-Party takes quite some battery and right now while writing this Firefox has >100GB virtual RAM reserved for some IPC messages, I personally think this is too much. So I'd like to file a report, but without steps to reproduce I'm afraid the developers are going to say 'well, that's something we are not able to diagnose', because I am unable to explain how to reproduce it. It just happens from time to time.

The anonymized about:memory report: https://bin.disroot.org/?2ba01ef78154cce4#8PLVqLTd9qgaRn2QVX2P17hkbHQyrTDuVAwoykj2cBxg

I left Firefox running like this for about half an hour and at 138GB reserved RAM Windows slaughtered my Firefox. The resulting crash report: https://bin.disroot.org/?0bc57492585dde4b#5YtbWgXcbZSkWYmg2CGkVn9iiipYwfYbxUfCLhmMJh7d

Do you have a clue where I might find out who sends those IPC messages, and therefore who is responsible for this?

Recent issue, last few days. Unable to access Microsoft One Drive online without first having to Refresh Firefox each time. It is then accessible for a short period of time before the address link again breaks down into an incomplete address that does not open One Drive. I've repeated this process a number of times and each and every time the only means of access to One Drive is by Refreshing Firefox. Access to One Drive is fine on other browsers. I've cleared the cache, and run Firefox in Troubleshoot mode, but the only thing that works, and does so consistently, is to first Refresh Firefox. It will then go to the correct address for One Drive for a short period of time, before again breaking down into an incomplete forwarding address. I prefer using Firefox, but regular access to One Drive, without all these unnecessary steps, is a requirement

Trying to access youtube shows the following message:

Secure Connection Failed

An error occurred during a connection to www.youtube.com. SSL received a malformed Server Hello handshake message.

Error code: SSL_ERROR_RX_MALFORMED_SERVER_HELLO

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the web site owners to inform them of this problem.

Learn more…

Hours after exiting firefox, the application continues to run processes and hold on to the memory it was using when I exited the application. The only way to free the memory is to key the processes via Task Manager

Firefox crashes randomly with no crash report being generated. It seems to have started doing this about a month ago. Nothing in particular seems to trigger it, and all of my software is up to date. It just closes any and all tabs that are open, as if I exited out of the program entirely.

Since this took me awhile to figure out I thought this could help other people.

firefox Did Not Connect: Potential Security Issue

Also you can manually add sites in preferences. Privacy & Security Preferences → View Certificates... → Servers → Add Exception